Look out Rick and Alexandrians. Negan is coming, and the characters on “The Walking Dead” won’t be prepared for what’s coming their way. During their visit to Hilltop, Rick and his group clearly viewed the mysterious Negan as no bigger threat than the villains they’ve faced in the past, but little do they know just how dangerous he actually is.

“The Walking Dead” comics reader do know, however, and most TV watchers probably have some sense that Negan is a big deal. For those who don’t know, executive producer David Alpert is hoping “Knots Untie” sparks some discussions.

“We want [people who don’t know Negan] to get into conversations with their friends like, ah, that’s nothing, and the friends who have read the comics be like, ‘Oh, you just don’t know. You just don’t know,'” he told said.

“Negan is one of the greatest villains ever created in TV,” Alpert said of what’s ahead on The Walking Dead. “It’s the greatest comic book villain I’ve ever read. He’s amazing, he’s terrifying, he’s funny, he’s charming, and the reason why I think he’s so terrifying is he makes a certain amount of sense. Even though he does horrible, horrible horrific things, there’s a certain logic — a barbaric logic, but a logic — to it. I think it’s not just the horrible things he does, it’s the appeal of that logic. It takes a little while to wrap your head around it.”

He added, “This guy’s built something. He’s built something huge, and it’s really impressive what he’s been able to build. He’s done something way beyond what the Governor has done, and he’s not hiding behind the niceties the way the Governor was. He’s not pretending to be something that he’s not. He’s a fully self-actualized human, it’s just not necessarily in a good way. You need to have that build up, you need to have his minions out there talking about him so you understand how impressive and how large what’s Negan’s built is.”